IN THE GENUS SQUALUS. 
169 
young animal, in order to preserve the parts from being 
injured by the frequent application of strong vibrations. 
In order to have a full view of the beauties of this extra- 
ordinary substance, let a portion of it be taken from the 
young animal, and carefully dried, and then placed in the 
focus of the rays emitted by a candle, during the day, so 
as to cause the parts to assume a slight reddish tinge, and 
examined in this position. The appearance of the parts is 
delightful, beyond expression ; the sight is truly enchant- 
ing. The most elegant specimen of crystallization that I 
have seen, appears paltry when compared to the magnificent 
termination of the sabulous nerve. Indeed nothing can sur- 
pass the golden hue of these transparent crystals. The 
fairy scenes of AUadin^s far-famed cave appear depicted in 
all their glowing splendour and luxuriant riches. Myriads 
of the most beautiful crystals lie piled in heaps, and form a 
boundless range of wild irregular groups, whose varied 
forms baffle description, but on which the eye dwells with 
delight. 
PLATE I. 
References to Figs. 1. and 2. of which the former is the external, 
the latter the internal view of a cast of the Labyrinth of Squalus 
caninus. 
A, the posterior cartilaginous canal. 
B, the anterior do. do; 
C, the external do. do. 
a, Cavity for the reception o£j;he spherical sac. 
b, The ampullae. 
c, Exit of the portio dura. 
d, Situation of the Angorian appendage. 
e, Septem. 
f, Situation of the sabulous plexus. 
